﻿//选择器
function $a(id,tag){
	var re=(id&&typeof id!="string")?id:document.getElementById(id);
	if(!tag){
		return re;
	}else{
		return re.getElementsByTagName(tag);
	}
}

//焦点滚动图 点击移动
function movec() {
	var o=$a("xifan_bd1lfimg","");
	var oli=$a("xifan_bd1lfimg","dl");
    var oliw=oli[0].offsetWidth; //每次移动的宽度	 
	var ow=o.offsetWidth-2;
	var dnow=0; //当前位置	
	var olf=oliw-(ow-oliw+10)/2;
	o["scrollLeft"]=olf+(dnow*oliw);

	var rqbd=$a("xifan_bd1lfsj","ul")[0];
	var extime;
	for(var i=1;i<oli.length;i++){
		rqbd.innerHTML+="<li>"+i+"</li>";
	}
	var rq=$a("xifan_bd1lfsj","li");
	for(var i=0;i<rq.length;i++){
		reg(i);
	}
	oli[dnow].className=rq[dnow].className="show";

	var wwww=setInterval(uu,2000);

	function reg(i){
		rq[i].onclick=function(){oli[dnow].className=rq[dnow].className="";dnow=i;oli[dnow].className=rq[dnow].className="show";mv();}}
	function mv(){clearInterval(extime);clearInterval(wwww);extime=setInterval(bc,15);wwww=setInterval(uu,4000);}
	function bc(){
		var ns=((dnow*oliw+olf)-o["scrollLeft"]);
		var v=ns>0?Math.ceil(ns/10):Math.floor(ns/10);
		o["scrollLeft"]+=v;
		if(v==0){
			clearInterval(extime);
			[dnow].className=rq[dnow].className="show";
			v=null;
		}
	}
	function uu(){
		if(dnow<oli.length-2){
			oli[dnow].className=rq[dnow].className="";
			dnow++;
			oli[dnow].className=rq[dnow].className="show";
		}else{
			oli[dnow].className=rq[dnow].className="";
			dnow=0;
			oli[dnow].className=rq[dnow].className="show";
		}
		mv();
	}
	o.onmouseover=function(){
		clearInterval(extime);
		clearInterval(wwww);
	};
	o.onmouseout=function(){extime=setInterval(bc,15);wwww=setInterval(uu,4000);}
}